Question

Wheat/ Rice grain is a fruit of the type
(a)Cypsela
(b)Samara
(c)Achene
(d)Caryopsis

Answer 1

Hint: This is a type of fruit where the seed coat fused with the ovary wall. Wheat or rice is a simple type of fruit from a single ovary of a single flower. This is Indehiscent fruit which does not split along definite lines to release seeds at maturity.

Complete answer:
Rice or grain comes under indehiscent fruit, this is a dry fruit which does not open when mature to shed their seeds and is formed from single carpel. Grain or caryopsis is a type of fruit in which one seed has a seed coat fused to the pericarp. Caryopsis is seen in the fruit typical of the Poaceae or Graminaece family.

Additional Information: -The structure of fruit is only found in the members of angiosperm in which a fruit developed solely from the ovary and its contents is known as true fruit.
-Indehiscent is further divided into achene, nut, samara, grain and schizocarp.
Achene- This is a one-seeded, dry indehiscent fruit with one seed is attached to the fruit wall at a single point and one seed which is free of the pericarp.
Nut- A dry indehiscent fruit with one seed fruit similar to an achene but with the wall greatly thickened and hardened.
Samara- This is a one or two seed dry, indehiscent fruit in which part of the fruit wall grows out into a wing.
Schizocarp- This fruit is formed from a compound pistil splitting into mericarps or pieces which enclose one or more seed and resemble fruit themselves.

So, the correct answer is ‘Caryopsis.’

Note: -A simple fruit develops from a single ovary can either be fleshy fruit or dry fruit.
-A fruit in which the wall becomes soft and fleshy as it matures is termed as fleshy fruit. This is of three types:
Drupe- peach, cherry, plum, coconut etc
Berry- grape, banana, gooseberry
Pome- apple
-A fruit in which the coat becomes dry at maturity is termed as a dry fruit. This is of two types:
Dehiscent- pea, peanut
Indehiscent- Buttercups, sunflower, chestnut